All players spread out into a defined space. One or two children are taggers and the rest are runners. Taggers try to tag the runners. If tagged, a runner becomes 'stuck in the mud' and holds a static balance (e.g. straddle, scale balance, front support) until released. To release a stuck child, a free runner must crawl under, step over or run around them, with the movement depending on the stuck runner's static position.